Dual-power automatic change-over switch

Abstract

The utility model relates to a dual-power automatic change-over switch, which comprises an automatic change-over mechanism and a contact system, and is characterized in that the automatic change-over mechanism comprises a shell, a motor and a change-over assembly linked with the motor; the conversion assembly comprises a conversion shaft, a driving disc, a limiting elastic piece, a rotating shaft, a manual operation rotating disc, an energy storage torsional spring arranged between the manual operation rotating disc and the driving disc, an indicating rotating disc rotationally arranged on the conversion shaft, and an indicating piece arranged on the shell in a sliding mode and matched with the indicating rotating disc. The manual operation rotating disc is provided with two driving arms matched with the limiting elastic piece, the two ends of the limiting elastic piece are provided with two bending limiting parts matched with the two driving arms, the driving arms act along with the manual operation shaft disc and abut against the bending limiting parts, and limiting matching of the driving arms and the bending limiting parts is formed. The utility model has the advantages of simple structure, stable and reliable performance, rapid and reliable conversion and high breaking capacity.

Description

Technical Field

[0001] The utility model specifically relates to a dual-power automatic conversion switch. Background Art

[0002] At present, the dual power automatic transfer switch, as the name implies, is to automatically connect to the backup power supply through the dual power switch when the power is suddenly cut off, so that our operation will not be interrupted and can continue to operate. The purpose of the dual power automatic transfer switch is simply to use one line for common use and one line for backup. When the common power suddenly fails or the power is cut off, the dual power switch is used to automatically switch to the backup power supply so that the equipment can still operate normally. Many industries and departments have very high requirements for the reliability of power supply. In order to ensure the continuity of power supply, many important occasions use dual power automatic transfer switches to power electrical appliances. As an essential device for power switching, the requirements for its technical performance are also getting higher and higher. The conversion speed of the automatic conversion mechanism of the existing dual power automatic transfer switch is slow, and the rapid opening or closing of the dual power automatic transfer switch cannot be realized, and the breaking capacity is low. The structural design of the existing automatic conversion mechanism is relatively complex, and the conversion reliability of the two power supplies is low, which can easily cause the circuit breaker switch to fail to switch on and off, thereby seriously affecting the working stability of the dual power automatic conversion switch, and easily causing the electrical interlock and mechanical interlock to fail. In severe cases, the common and backup power supplies will run in parallel, causing the load equipment to burn out, posing a safety hazard. Summary of the invention

[0003] The utility model aims to overcome the defects of the prior art and provide a dual power automatic transfer switch with simple structure, stable and reliable performance, rapid and reliable conversion and high breaking capacity.

[0004] To achieve the above-mentioned purpose, the utility model adopts a dual power automatic conversion switch, including an automatic conversion mechanism and a contact system. The automatic conversion mechanism includes a shell, a motor, and a conversion component linked with the motor. The conversion component includes a conversion shaft rotatably set on the shell and used to drive the contact system to perform two-way power switching, a driving disk linked with the conversion shaft, a limiting spring linked with the driving disk, a rotating shaft rotatably set on the conversion shaft and linked with the motor, a manual operating dial linked with the rotating shaft, an energy storage torsion spring set between the manual operating dial and the driving disk, an indicating dial rotatably set on the conversion shaft, and an indicating member slidably set on the shell and matched with the indicating dial. The manual operating dial has two driving arms matched with the limiting spring, and two ends of the limiting spring have two bending limiting parts matched with the two driving arms. The driving arm moves with the manual operating shaft and contacts the bending limiting part, and constitutes a limiting match between the driving arm and the bending limiting part.

[0005] The beneficial effects of the above structure are: the automatic conversion mechanism adopts an energy storage structure design, the manual operation turntable drives the driving turntable to rotate rapidly through the energy storage torsion spring, and the driving turntable drives the conversion shaft to perform rapid conversion, thereby effectively improving the conversion speed of the automatic conversion mechanism. The two driving arms of the manual operation turntable and the two bent limit parts of the limit spring sheet adopt limit matching. During the conversion, the conversion interlock of the automatic conversion mechanism can be realized, which is conducive to improving the reliable conversion of the two power supplies of the dual power automatic conversion switch, and can avoid the parallel operation of two (common and standby) power supplies, so that the conversion reliability is better and the safety is higher. And the indicator turntable on the conversion shaft can drive the indicator to move, so as to realize the working state indication of the dual power automatic conversion switch, which is conducive to improving the working reliability of the dual power automatic conversion switch. Therefore, the dual power automatic conversion switch has the advantages of simple structure, stable and reliable performance, rapid and reliable conversion, and high breaking capacity.

[0006] In particular, two dial blocks are arranged on both sides of the corresponding indicator on the indicator dial, one end of the indicator has two toggle rods matched with the two dial blocks, and two micro switches arranged in the housing and matched with the two dial blocks, the other end of the indicator has an indicator plate exposed outside the housing, and the indicator plate is provided with an indication mark, the dial block moves with the indicator dial and drives the toggle rod to move, and constitutes a linkage cooperation between the toggle rod and the dial block, the two dial blocks move with the indicator dial and trigger the two micro switches respectively, and realize the connection or disconnection of the micro switches. The indicator dial toggles the indicator to move, thereby realizing the working state indication of the dual power automatic transfer switch, and the two micro switches monitor the position of the indicator dial, which is conducive to improving the working reliability of the dual power automatic transfer switch.

[0007] In particular, the bending limit portion has a guiding inclined surface matched with the driving arm, one side of the driving arm has a guiding arc surface matched with the guiding inclined surface, the guiding arc surface moves with the driving arm and slides on the guiding inclined surface, the bending limit portion has a limiting plane transitionally connected with the guiding inclined surface, the other side of the driving arm has a locking plane matched with the limiting plane, the locking plane abuts against the limiting plane, and forms a limiting match between the locking plane and the limiting plane. During operation, the manual operating turntable drives the driving arm to move, the guiding arc surface of the driving arm slides along the guiding inclined surface, the manual operating turntable compresses the energy storage torsion spring, and the energy storage torsion spring starts to store energy, when the locking plane of the driving arm abuts against the limiting plane of the bending limit portion, the energy storage torsion spring releases energy, and the manual operating turntable drives the driving disk to quickly perform the switching action through the energy storage torsion spring, which is beneficial to improve the switching speed of the automatic switching switch.

[0008] In particular, the energy storage torsion spring is sleeved on the rotating shaft, the driving disk is provided with a limit arm matched with the energy storage torsion spring, the two torsion arms of the energy storage torsion spring are respectively in contact with the two sides of the limit arm, the manually operated turntable is provided with a toggle arm between the two corresponding torsion arms, the toggle arm moves with the manually operated turntable and toggle the torsion arm. The two torsion arms of the energy storage torsion spring are respectively in contact with the limit arm of the driving disk and the toggle arm of the manually operated turntable, thereby facilitating the assembly of the energy storage torsion spring with the driving disk and the manually operated turntable, making the assembly more convenient, and ensuring that the transmission between the manually operated turntable and the driving disk is more reliable.

[0009] In particular, a mechanism cover covering the conversion assembly is arranged in the housing, one end of the rotating shaft passes through the positioning hole of the mechanism cover and has a clamping groove exposed outside the mechanism cover, the output shaft of the motor is clamped in the clamping groove, and constitutes a linkage cooperation between the rotating shaft and the output shaft, the manual operation turntable has a manual operation arm exposed outside the mechanism cover, and the housing is provided with a manual operation hole corresponding to the manual operation arm. The mechanism cover can play a positioning role on the main shaft, and can ensure that the rotating shaft can rotate reliably, which is conducive to improving the working reliability of the dual power automatic conversion switch.

[0010] In particular, one end of the conversion shaft has a clamping portion that matches the indicating rotary disk, the indicating rotary disk is provided with a clamping hole that is clamped with the clamping portion, the clamping portion passes through the clamping hole and is clamped on the contact frame of the contact system, the other end of the conversion shaft has a positioning groove that matches the rotating shaft, the other end of the rotating shaft is provided with a rotating shaft portion that matches the positioning groove, and the rotating shaft portion is rotatably arranged in the positioning groove. The indicating conversion disk and the conversion shaft are connected by a clamping fit, so as to facilitate the assembly of the indicating conversion disk and the conversion shaft, make the assembly more convenient, and ensure that the conversion shaft can reliably drive the indicating conversion disk to rotate.

[0011] Particularly, a handle slot is provided on the housing, and an operating handle is provided in the handle slot. The operating handle is engaged in the handle slot of the housing, so that the user can operate the device more conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a stereogram of an embodiment of the utility model.

[0013] Figure 2 This is an exploded view of an embodiment of the utility model.

[0014] Figure 3 It is a three-dimensional diagram of the conversion assembly according to an embodiment of the utility model.

[0015] Figure 4 This is an assembly diagram of the indicating dial and the indicating member according to an embodiment of the utility model. DETAILED DESCRIPTION

[0016] like Figures 1 to 4 As shown, the embodiment of the utility model is a dual power automatic conversion switch, including an automatic conversion mechanism 10 and a contact system 30. The automatic conversion mechanism 10 includes a housing 11, a motor 12, and a conversion assembly 20 arranged in linkage with the motor 12. The conversion assembly 20 includes a conversion shaft 21 rotatably arranged on the housing 11 and used to drive the contact system 30 to perform a two-way power switching action, a drive disk 22 linked to the conversion shaft 21, a limit spring 23 linked to the drive disk 22, a rotating shaft 24 rotatably arranged on the conversion shaft 21 and linked to the motor 12, and a manual operating mechanism 23 linked to the rotating shaft 24. The manual operation dial 25, the energy storage torsion spring 26 arranged between the manual operation dial 25 and the driving disk 22, the indicating dial 27 rotatably arranged on the conversion shaft 21, and the indicating member 28 slidably arranged on the housing 10 and matched with the indicating dial 27, the manual operation dial 25 has two driving arms 251 matched with the limiting spring sheet 23, and the two ends of the limiting spring sheet 23 have two bending limiting portions 231 matched with the two driving arms 251, the driving arms 251 move with the manual operation shaft disk 25 and abut against the bending limiting portions 231, and constitute the limiting cooperation between the driving arms 251 and the bending limiting portions 231. The bending limit portion 231 has a guide slope 2311 that matches the driving arm 251, and one side of the driving arm 251 has a guide arc surface 2511 that matches the guide slope 2311. The guide arc surface 2511 moves with the driving arm 251 and slides on the guide slope 2311. The bending limit portion 231 has a limiting plane 2312 that is transitionally connected to the guiding slope 2311, and the other side of the driving arm 251 has a locking plane 2512 that matches the limiting plane 2312. The locking plane 2512 abuts against the limiting plane 2312, and constitutes a limiting match between the locking plane 2312 and the limiting plane 2512. During operation, the manual operating turntable drives the driving arm to move, and the guide arc surface of the driving arm slides along the guide inclined surface. The manual operating turntable compresses the energy storage torsion spring, and the energy storage torsion spring starts to store energy. When the locking plane of the driving arm contacts the limiting plane of the bending limiting part, the energy storage torsion spring releases energy, and the manual operating turntable drives the driving disk to quickly perform the switching action through the energy storage torsion spring, which is beneficial to improve the switching speed of the automatic switching switch.

[0017] like Figure 2 , 4As shown, two dial blocks 271 are arranged on the indicating dial 27 at the two sides of the corresponding indicating member 28, one end of the indicating member 28 has two toggle rods 281 matched with the two dial blocks 271, and two micro switches 29 arranged in the housing 11 and matched with the two dial blocks 271, and the other end of the indicating member 28 has an indicating plate 282 exposed outside the housing 11, and the indicating plate 282 is provided with an indicating mark 283, the dial block 271 moves with the indicating dial 27 and drives the toggle rod 281 to move, and constitutes the linkage cooperation between the toggle rod 281 and the dial block 271, the two dial blocks 271 move with the indicating dial 27 and trigger the two micro switches 29 respectively, so as to realize the connection or disconnection of the micro switches 29. The indicating dial toggles the indicating member to move, thereby realizing the working state indication of the dual power automatic transfer switch, and the two micro switches monitor the position of the indicating dial, which is conducive to improving the working reliability of the dual power automatic transfer switch.

[0018] like Figure 1 , 2As shown, the energy storage torsion spring 26 is sleeved on the rotating shaft 24, the driving disk 22 is provided with a limit arm 221 matched with the energy storage torsion spring 26, the two torsion arms 261 of the energy storage torsion spring 26 are respectively in contact with the two sides of the limit arm 221, and the manual operation turntable 25 is provided with a toggle arm 252 between the two corresponding torsion arms 261, and the toggle arm 252 moves with the manual operation turntable 25 and toggle the torsion arm 261. The two torsion arms of the energy storage torsion spring are respectively in contact with the limit arm of the driving disk and the toggle arm of the manual operation turntable, so as to facilitate the assembly of the energy storage torsion spring with the driving disk and the manual operation turntable, and the assembly is more convenient, and the transmission between the manual operation turntable and the driving disk can be ensured to be more reliable. The housing 11 is provided with a mechanism cover 200 covering the conversion assembly 30, one end of the rotating shaft 24 passes through the positioning hole 201 of the mechanism cover 200 and has a clamping groove 241 exposed outside the mechanism cover 200, the output shaft 121 of the motor 12 is clamped in the clamping groove 241, and constitutes the linkage cooperation between the rotating shaft 24 and the output shaft 121, the manual operation turntable 25 has a manual operation arm 253 exposed outside the mechanism cover 200, and the housing 11 is provided with a manual operation hole 111 corresponding to the manual operation arm 253. The mechanism cover can play a positioning role on the main shaft, and can ensure that the rotating shaft can rotate reliably, which is conducive to improving the working reliability of the dual power automatic conversion switch. The conversion shaft 21 has a clamping portion 211 matched with the indicating dial 27 at one end, and the indicating dial 27 is provided with a clamping hole 272 that is clamped with the clamping portion 211. The clamping portion 211 passes through the clamping hole 272 and is clamped on the contact frame 31 of the contact system 30. The conversion shaft 21 has a positioning groove 212 matched with the rotating shaft 24 at the other end, and a rotating shaft portion 242 matched with the positioning groove 212 is provided at the other end of the rotating shaft 24, and the rotating shaft portion 242 is rotatably arranged in the positioning groove 212. The indicating conversion disk and the conversion shaft are connected by a clamping matching method, so as to facilitate the assembly of the indicating conversion disk and the conversion shaft, and the assembly is more convenient, and it can be ensured that the conversion shaft can reliably drive the indicating conversion disk to rotate. The housing 11 is provided with a handle groove 112, and the handle groove 112 is provided with an operating handle 13. The operating handle is clamped in the handle groove of the housing, so as to facilitate the user's operation and make the operation more convenient.

[0019] The automatic conversion mechanism adopts an energy storage structure design. The manual operation turntable drives the driving turntable to rotate rapidly through the energy storage torsion spring, and the driving turntable drives the conversion shaft to perform rapid conversion, thereby effectively improving the conversion speed of the automatic conversion mechanism. The two driving arms of the manual operation turntable and the two bent limit parts of the limit spring sheet adopt limit matching. During the conversion, the conversion interlock of the automatic conversion mechanism can be realized, which is conducive to improving the reliable conversion of the two power supplies of the dual power automatic conversion switch, and can avoid the parallel operation of two (common and standby) power supplies, so that the conversion reliability is better and the safety is higher. And the indicator turntable on the conversion shaft can drive the indicator to move, so as to realize the working status indication of the dual power automatic conversion switch, which is conducive to improving the working reliability of the dual power automatic conversion switch. Therefore, the dual power automatic conversion switch has the advantages of simple structure, stable and reliable performance, rapid and reliable conversion, and high breaking capacity.

Claims

1. A dual power automatic transfer switch, comprising an automatic transfer mechanism and a contact system, characterized in that: The automatic conversion mechanism includes a shell, a motor, and a conversion component linked with the motor. The conversion component includes a conversion shaft rotatably set on the shell and used to drive the contact system to perform two-way power switching, a driving disk linked with the conversion shaft, a limiting spring piece linked with the driving disk, a rotating shaft rotatably set on the conversion shaft and linked with the motor, a manual operating dial linked with the rotating shaft, an energy storage torsion spring set between the manual operating dial and the driving disk, an indicating dial rotatably set on the conversion shaft, and an indicating member slidably set on the shell and matched with the indicating dial. The manual operating dial has two driving arms matched with the limiting spring pieces, and two ends of the limiting spring piece have two bending limiting parts matched with the two driving arms. The driving arm moves with the manual operating shaft and contacts the bending limiting part, and constitutes a limiting match between the driving arm and the bending limiting part.

2. The dual power automatic transfer switch according to claim 1, characterized in that: Two dial blocks are arranged on both sides of the corresponding indicator part on the indicating dial. One end of the indicating part has two toggle rods matched with the two dial blocks, and two micro switches arranged in the shell and matched with the two dial blocks. The other end of the indicating part has an indicating plate exposed outside the shell, and an indicating mark is arranged on the indicating plate. The dial blocks move with the indicating dial and drive the toggle rods to move, and constitute a linkage cooperation between the toggle rods and the dial blocks. The two dial blocks move with the indicating dial and trigger the two micro switches respectively, so as to realize the connection or disconnection of the micro switches.

3. The dual power automatic transfer switch according to claim 1 or 2, characterized in that: The bending limit portion is provided with a guide slope that matches with the driving arm, and one side of the driving arm is provided with a guide arc surface that matches with the guide slope. The guide arc surface moves with the driving arm and slides on the guide slope. The bending limit portion is provided with a limiting plane that is transitionally connected with the guiding slope, and the other side of the driving arm is provided with a locking plane that matches with the limiting plane. The locking plane is in contact with the limiting plane, and constitutes a limiting cooperation between the locking plane and the limiting plane.

4. The dual power automatic transfer switch according to claim 1 or 2, characterized in that: The energy storage torsion spring is sleeved on the rotating shaft, the driving disk is provided with a limiting arm matched with the energy storage torsion spring, the two torsion arms of the energy storage torsion spring are respectively abutted on both sides of the limiting arm, the manually operated turntable is provided with a toggle arm between the two corresponding torsion arms, the toggle arm moves with the manually operated turntable and toggle the torsion arm to move.

5. The dual power automatic transfer switch according to claim 1 or 2, characterized in that: A mechanism cover covering the conversion assembly is arranged in the shell, one end of the rotating shaft passes through the positioning hole of the mechanism cover and has a clamping groove exposed outside the mechanism cover, the output shaft of the motor is engaged in the clamping groove, and constitutes a linkage cooperation between the rotating shaft and the output shaft, the manually operated turntable has a manual operating arm exposed outside the mechanism cover, and a manual operating hole is arranged on the shell corresponding to the manual operating arm.

6. The dual power automatic transfer switch according to claim 1 or 2, characterized in that: One end of the conversion shaft has a clamping portion that matches with the indicating dial, and the indicating dial is provided with a clamping hole that is clamped with the clamping portion. The clamping portion passes through the clamping hole and is clamped on the contact frame of the contact system. The other end of the conversion shaft has a positioning groove that matches with the rotating shaft, and the other end of the rotating shaft is provided with a rotating shaft portion that matches with the positioning groove, and the rotating shaft portion is rotatably arranged in the positioning groove.

7. The dual power automatic transfer switch according to claim 1 or 2, characterized in that: The shell body is provided with a handle groove, and an operating handle is provided in the handle groove.

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